Too many rows in database

Since upgrading to version 5.0.3. I see that the database adds a lot of lines and they seem redundant.

Here are the lines with the same value:
_kksr_avg (old)
_kksr_avg_default (new)

_kksr_cast (old)
_kksr_count_default (new)

_kksr_ratings (old)
_kksr_ratings_default (new)

I don’t understand what this line does?
_kksr_fingerprint_default

Will you remove the old meta_keys in the future?

Thank you!